Gaseous fuel



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UNITED STATES PATENT OFFICE.

JAMES R. ROSE, OF EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, 01: LAKEWOOD, OHIO, ASSIGNORS TO CARBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA,

A. CORPORATION OF DELAWARE.

GASEOUS FUEL.

No Drawing.

To all whom 2'25 may concern:

Be it known that we, (1) JAMES H. Ross, (2) Join; HARRIS, citizens of the United States, residing at (l) Edgeworth, (2) Lakewood, in the county of Allegheny, (2) Cuyahoga, and State of Pennsylvania, Ohio, have invented a certain new and useful Improvement in Gaseous Fuel, of which the following is a full, clear, and exact description.

This invention relates to gaseous fuels, and particularly to fuels for the cutting and welding of metals wherein a combustible base of hydrogen is employed together with another or gases capable of producing within the blow pipe flame a visible or luminous cone whereby the proportions of the combustible gases and oxygen may be conveniently adjusted and the application of the flame to the work is facilitated.

It has been proposed to mix with hydrogen, gases such as illuminating gas and carbon monoxide, the mixture being particularly well suited for certain kinds of work.

It is the purpose of this invention to produce a gas, employing hydrogen as such combustible base, which shall be particularly useful for the cutting of alloys, cast steel, corroded, dirty and slaggy iron and steel, as well. as cast iron; also for cutting large bodies or masses of metal, as well as for heating such large masses or bodies of metal for the purpose of softening the same. For this purpose we employ a mixture of propane and ethylene with hydrogen in proportions of from 2. to l2{-% by volume each of the propane and ethylene t0 the hydrogen constituent. By the use of these gases, a high carbon content in the mixture is obtained, thereby producing a blowpipe flame the volume and heat units of which will be increased over the volume and heat units produced by the combustion of hydrogen alone with oxygen, to the extent to which the pro pane and ethylene are present in the mixture. The presence of the propane and Specification of Letters Patent.

Application filed December 26, 1919.

Patented Jan. 24, 1922.

Serial No. 347,446.

ethylene in the mixture enables the metal to be pro-heated quickly and, in the case of large masses or bodies of such metal, with suflicient rapidity to more than offset the loss of heat through conduction and radiation. This renders the fuel particularly useful for the cutting and heating of such heavy masses of metal, as well as for cutting the special metals of the character set forth hereinbefore.

According to Richards on Metallurgical Calculations, published in 1908, the flame temperature produced by the combustion of the aforesaid gases will exceed 3200 0., and the variations in the percentage of the said gases will cause the following variations in the net B. T. U. per cubic foot of mixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture:

No. 1 mixture, 95% H. with 29 each of propane and ethylene; net B. T. ULs 382; cu. ft. of oxygen .675.

No. 2 mixture, 75% H. with 12. each of propane and ethylene; net B. T. U.s 733; cu. ft. of oxygen 1.375.

Having thus described our invention, what we claim is 1. A gas for cutting, welding and heating purposes consisting of a mixture of propane and ethylene with hydrogen in the proportions of from 2570 to 1215 by volume each oi propane and ethylene to hydrogen.

2. A gas for cutting, welding and heating purposes consisting of a mixture of propane and ethylene with hydrogen in proportions not substantially less than 5% by volume of such. combined gases to the hydrogen and not materially more than 25% of such combined gases to the hydrogen, the propane and ethylene being present in the proportions of at least 2 1-72; each in such mixture.

In testimony whereof we hereunto afiix our signatures.

JAMES R. ROSE. JOHN HARRIS. 

